Easy Southern Buttermilk Slab Pie - Foodness Gracious

Ingredients

• 2 cups all purpose flour
• 1/2 cup powdered sugar
• 1 cup room temp butter
• 3 large eggs
• 1 1/2 tsp cornstarch
• 1 cup sugar
• 1 1/2 cups buttermilk
• 8 tbsp unsalted butter melted
• 2 tsp lemon zest
• 1 tbsp lemon juice
• 1/2 tsp ground nutmeg